研究目的
Investigating the construction of NB-QC-LDPC codes based on superposition framework for optical communication systems to achieve better performance in terms of girth and net coding gain (NCG).
研究成果
The constructed NB-QC-LDPC codes based on superposition framework achieve significant performance improvement, with 0.1dB~0.4dB NCG at BER of 10^-4 compared to recent proposed codes. This demonstrates the effectiveness of maximizing girth and reducing short cycles in enhancing code performance.
研究不足
The study focuses on the construction and simulation of NB-QC-LDPC codes without detailing practical implementation challenges or hardware constraints.
1：Experimental Design and Method Selection:
The construction of NB-QC-LDPC codes is based on a superposition framework, optimizing the base matrix to maximize girth and reduce the number of short cycles.
2：Sample Selection and Data Sources:
The study uses parameters from referenced NB-QC-LDPC codes for comparison.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
The process involves base matrix design, optimization using local optimal search algorithm, matrix dispersion, and binary to non-binary replacement.
5：Data Analysis Methods:
Performance is evaluated by comparing the net coding gain (NCG) and bit error rate (BER) with referenced codes.
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